data analysis

1 Import data

2 Abbreviations

3 Table 1

Potato genotypes (Solanum tuberosum L.) used for water deficit experiment with two commercial varieties and 13 genotypes from advanced breeding population developed by the International Potato Center (CIP). Source: CIP
Number Genotypes Adaptability Growing period Heat tolerance Dry matter (%)
G01 CIP720088 (Achirana-INTA) Early 19
G02 CIP392797.22 (UNICA) Lowland and highland Tropics Medium 21
G03 CIP397077.16 Lowland tropics Medium 20
G04 CIP398192.213 Mid elevation tropics Medium Tolerant 22
G05 CIP398180.612 Medium
G06 CIP398208.704 Mid elevation tropics Medium Tolerant 24
G07 CIP398098.119 Mid elevation tropics Medium Tolerant 26
G08 CIP398190.89 Mid elevation tropics Medium Tolerant 21
G09 CIP398192.592 Mid elevation tropics Medium Tolerant 21
G10 CIP398201.510 Mid elevation tropics Medium Tolerant 20
G11 CIP398203.244 Mid elevation tropics Medium Tolerant 20
G12 CIP398203.5 Mid elevation tropics Medium Tolerant 13
G13 CIP398208.219 Mid elevation tropics Medium Tolerant 22
G14 CIP398208.33 Mid elevation tropics Medium Tolerant 21
G15 CIP398208.620 Mid elevation tropics Medium Tolerant 21

4 Tables 2

Treatment comparison for 17 variables between Well-Watered (WW) and Water Deficit (WD) in 15 potato genotypes. The values for different variables are represented by the mean ± standard deviation with the significance under t-test with their respective p-values.
Variable Water deficit Well-Watered p-value
Chlorophyll concentration (SPAD) at 29 dap 56.1 ± 4.9 56.7 ± 5.0 0.4
Chlorophyll concentration (SPAD) at 59 dap 47.9 ± 4.4 45.8 ± 3.7 0.002
Chlorophyll concentration (SPAD) at 76 dap 46.0 ± 5.4 41.7 ± 3.6 <0.001
Chlorophyll concentration (SPAD) at 83 dap 44.1 ± 5.9 39.7 ± 4.5 <0.001
Plant height (cm) 132 ± 15 150 ± 16 <0.001
Relative water content (%) 58 ± 6 69 ± 5 <0.001
Leaf osmotic potential (MPa) -2.84 ± 0.30 -2.25 ± 0.29 <0.001
Leaf dry weight (g) 12.0 ± 3.7 17.3 ± 5.5 <0.001
Stem dry weight (g) 11.6 ± 9.1 14.5 ± 6.1 <0.001
Root dry weight (g) 3.67 ± 1.94 3.50 ± 1.96 0.6
Tuber dry weight (g) 24 ± 11 40 ± 19 <0.001
Tuber number (N°) 12.0 ± 6.2 12.0 ± 4.9 0.8
Total transpiration (mL) 4.52 ± 1.22 7.85 ± 2.20 <0.001
Leaf area (cm2) 2,488 ± 797 7,100 ± 2,380 <0.001
Root length (cm) 33.1 ± 6.5 32.5 ± 5.8 0.4
Total dry biomass (g) 51 ± 16 75 ± 24 <0.001
Harvest index (HI) 0.47 ± 0.16 0.53 ± 0.14 0.020
Specific leaf area (cm2g-1) 218 ± 62 415 ± 82 <0.001
Relative chlorophyll content (RCC) 0.021 ± 0.015 0.008 ± 0.007 <0.001
Biomass water use efficiency (gL-1) 11.32 ± 2.15 9.53 ± 1.26 <0.001
Tuber water use efficiency (gL-1) 5.31 ± 2.03 5.09 ± 1.75 0.5

5 Figure 1

6 Figure 2

Where: Chlorophyll Concentration (SPAD), Plant height (HGT; cm), Relative water content (RWC; %), Leaf osmotic potential (LOP; MPa), Leaf dry weight (LDW; g), Stem dry weight (SDW; g), Root dry weight (RDW; g), Tuber dry weight (TDW; g), Tuber number (NTUB; N°), Total transpiration (TRS; mL), Leaf area (LFA; cm2), Root length (RTL; cm), Total dry biomass (TDB; g), Harvest index (HI), Specific leaf area (SLA; cm2g-1), Relative chlorophyll content (RCC), Biomass water use efficiency (WUEB; gL-1), Tuber water use efficiency (WUET; gL-1).

7 Figure 3

Where: Chlorophyll Concentration (SPAD), Plant height (HGT; cm), Relative water content (RWC; %), Leaf osmotic potential (LOP; MPa), Leaf dry weight (LDW; g), Stem dry weight (SDW; g), Root dry weight (RDW; g), Tuber dry weight (TDW; g), Tuber number (NTUB; N°), Total transpiration (TRS; mL), Leaf area (LFA; cm2), Root length (RTL; cm), Total dry biomass (TDB; g), Harvest index (HI), Specific leaf area (SLA; cm2g-1), Relative chlorophyll content (RCC), Biomass water use efficiency (WUEB; gL-1), Tuber water use efficiency (WUET; gL-1).

8 Table S1

Genetic variance (V.g), Error variance (V.e), and repeatability in 15 potatoes genotypes.
Trait mean std min max V.g V.e repeatability
Chlorophyll concentration (SPAD) at 29 dap 56.36 4.14 46.93 61.96 16.20 9.19 0.88
Chlorophyll concentration (SPAD) at 59 dap 46.84 3.32 40.88 52.97 10.40 6.00 0.87
Chlorophyll concentration (SPAD) at 76 dap 43.88 3.60 39.03 52.10 11.43 15.04 0.75
Chlorophyll concentration (SPAD) at 83 dap 42.02 3.66 37.14 50.59 11.57 17.60 0.72
Plant height (cm) 141.19 13.62 111.40 161.30 169.19 163.20 0.81
Relative water content (%) 63.46 2.73 58.67 70.53 1.19 62.53 0.07
Leaf osmotic potential (MPa) -2.55 0.10 -2.69 -2.39 0.00 0.17 0.00
Leaf dry weight (g) 14.62 4.17 3.42 20.03 16.00 14.12 0.82
Stem dry weight (g) 12.60 4.75 2.82 22.30 19.96 9.41 0.89
Root dry weight (g) 3.54 1.76 0.82 6.45 3.02 0.63 0.95
Tuber dry weight (g) 31.66 12.18 11.63 53.15 131.65 168.57 0.76
Tuber number (N°) 12.04 3.43 6.00 17.40 9.55 21.90 0.64
Total transpiration (mL) 6.18 1.39 2.77 8.37 1.49 4.53 0.57
Leaf area (cm2) 4938.49 1467.31 1027.44 7072.80 1431807.63 7188488.76 0.44
Root length (cm) 32.85 4.72 24.60 39.50 20.57 16.60 0.83
Total dry biomass (g) 62.74 15.58 26.42 87.80 209.08 341.65 0.71
Harvest index (HI) 0.50 0.14 0.18 0.72 0.02 0.00 0.96
Specific leaf area (cm2g-1) 319.39 43.38 256.34 410.06 115.92 14981.60 0.03
Relative chlorophyll content (RCC) 0.01 0.01 0.01 0.04 0.00 0.00 0.80
Biomass water use efficiency (gL-1) 10.35 0.92 9.21 12.12 0.64 1.54 0.62
Tuber water use efficiency (gL-1) 5.19 1.70 1.81 7.95 2.83 0.73 0.94

9 Figure S1

10 Figure S2

11 Figure S3